diff --git a/CHANGES.txt b/CHANGES.txt
index ab28dd4523..6d2e6c6afa 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -1,4 +1,5 @@
 3.11.0
+ * Support unaligned memory access for AArch64 (CASSANDRA-13326)
  * Improve SASI range iterator efficiency on intersection with an empty range (CASSANDRA-12915).
  * Fix equality comparisons of columns using the duration type (CASSANDRA-13174)
  * Obfuscate password in stress-graphs (CASSANDRA-12233)
diff --git a/src/java/org/apache/cassandra/utils/Architecture.java b/src/java/org/apache/cassandra/utils/Architecture.java
index c18185a972..aa00ca1eba 100644
--- a/src/java/org/apache/cassandra/utils/Architecture.java
+++ b/src/java/org/apache/cassandra/utils/Architecture.java
@@ -26,14 +26,15 @@ import com.google.common.collect.Sets;
 
 public final class Architecture
 {
-    // Note that s390x architecture are not officially supported and adding it here is only done out of convenience
-    // for those that want to run C* on this architecture at their own risk (see #11214)
+    // Note that s390x & aarch64 architecture are not officially supported and adding it here is only done out of convenience
+    // for those that want to run C* on this architecture at their own risk (see #11214 & #13326)
     private static final Set<String> UNALIGNED_ARCH = Collections.unmodifiableSet(Sets.newHashSet(
         "i386",
         "x86",
         "amd64",
         "x86_64",
-        "s390x"
+        "s390x",
+        "aarch64"
     ));
 
     public static final boolean IS_UNALIGNED = UNALIGNED_ARCH.contains(System.getProperty("os.arch"));